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Compromise

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Compromise

Compromise

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  • 1. Galapagos Adaptations Exploring how species have adapted to their island environments over time.
  • 2. Galapagos Animal Gallery
    • The paired photographs you will see depict similar animals of the same size.
    • Compare these images carefully.
    • List any differences you notice, no matter how small.
    • Briefly describe each animal’s habitat and diet.
  • 3. Marine Iguana Land Iguana (2006). Darwin & the Galapagos Islands. Retrieved January 4, 2007, from Go Visit Galapagos Web site: http://www.govisitgalapagos.com/darwin/default.asp National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  • 4. Marine Iguana Land Iguana (Jan 3, 2007). Photos/Mixed Selection. Retrieved January 9, 2007, from www.CQJ.dk Travelling, Sports Fishing & Photography Web site: http://www.cqj.dk/mix-photo-eng.htm (2007). Galapagos Pictures, Galapagos Wildlife. Retrieved January 9, 2007, from in-quito.com Galapagos Pictures Web site: http://www.in-quito.com/galapagos/pictures-2.htm
  • 5. Saddleback Tortoise Domed Tortoise National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  • 6. Saddleback Tortoise Domed Tortoise (2007). Galapagos Islands Guided Tour. Retrieved January 9, 2007, from AGalapagos Islands Guided Tour - Isla Santa Cruz, Ecuador Web site: http:// www.discovergalapagos.com/santacru.html (2006). Tortoise T-Shirts. Retrieved January 9, 2007, from JungleWalk.com Gifts for Animal Lovers Web site: http://www.junglewalk.com/shop/Tortoise-t-shirts.htm
  • 7. Flightless Cormorant Cormorant National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  • 8. Flightless Cormorant Cormorant (2007). Cormorant Showing Off Photo. Retrieved January 9, 2007, from TrekNature Web site: http://www.treknature.com/gallery/North_America/Canada/photo45462.htm (2007). Flightless Cormorant. Retrieved January 9, 2007, from ARKive: Images of Life on Earth Web site: http:// www.arkive.org/species/GES/birds/Phalacrocorax_harrisi /
  • 9.
    • Is the only sea-going iguana in the world
    • Flat tail
    • Square nose
    • Dark coloration
    • Partially webbed feet
    • Coloration camouflages them in the dark lava on which they live
      • Enables iguanas of all ages to absorb more heat from the sun
    Marine Iguana
  • 10.
    • A large relative of the South American and Caribbean terrestrial iguana
    • Round tail
    • Pointed nose
    • Brownish-red in color on top
    • Yellow-orange underneath
    • Eats grass and other ground plants, especially the large prickly-pear cactus.
    Land Iguana
  • 11. Marine Iguana
    • Lives near the water
    • Lives in dry regions on land
    Land Iguana vs.
    • Dark color
    • Short snout
    • Long claws for gripping rocks
    • Light color
    • Long snout
    • Short claws
    National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html (2006). Darwin & the Galapagos Islands. Retrieved January 4, 2007, from Go Visit Galapagos Web site: http://www.govisitgalapagos.com/darwin/default.asp
  • 12.
    • One of the major groups of giant tortoises in the Galapagos Islands
    • Arched carapace (shell) in the front
    • Long legs
    • Long snout
    • Long neck that allows it to reach for its food high above the ground
    • Found in the dry areas of Espanola, Pinzon, Pinta, and Fernandina Islands
    Saddleback Tortoise
  • 13.
    • One of the major groups of giant tortoises in the Galapagos Islands
    • Rounded shell
    • Blunt snout
    • Shorter neck
    • Found on islands with rich vegetation (like Santa Cruz and Isabela)
    • Larger and heavier
    • Rounded shell allows it to move through the thick vegetation more easily than the saddleback tortoise
    Domed Tortoise
  • 14.
    • Lives in dry region
    vs.
    • Lives in an area of thick vegetation
    Saddleback Tortoise Domed Tortoise
    • Eats leaves high in trees
    • Highly arched shell opening
    • Long neck
    • Long legs
    • Eats grasses and leaves close to ground
    • Low, rounded shell opening
    • Short neck
    • Short legs
    National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  • 15.
    • Found only in the Galapagos
    • Dark with black coloration above and brown underneath
    • Streamlined body
    • Strong legs
    • Sparsely feathered vestigial wings
      • The wings are small and useless for flight
    • Webbed feet
    • Uses its strong legs and webbed feet to swim and capture fish, eels, and octopuses
    Flightless Cormorant
  • 16.
    • 28 other living species of cormorants, all of which use their wings for flight
    • Well-developed wing muscles, making their bodies thicker than the flightless cormorant
    • Legs are much more refined because they do not use them for swimming that much
    • Eat mainly fish
    Cormorant
  • 17. Flightless Cormorant
    • Found only in the Galapagos
    • Not found in the Galapagos
    vs. Cormorant
    • Thick, strong legs for swimming
    • Small, vestigial wings
    • Streamlined body for swimming
    • Long, well-developed wings
    • Slender Legs
    • Heavier body
    National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html National Science Teachers Association, NSTA Galapagos. Retrieved January 4, 2007, from Classroom Investigations: Galapagos Adaptations Web site: http://pubs.nsta.org/galapagos/activities/gallery/gallery2.html
  • 18. Looking at Habitat Adaptations
    • Choose one animal from each pair.
    • Explain how the traits you observed may help the animal survive or thrive in its habitat.
    • Give at least three examples of different traits and explain each one.
  • 19.
    • How have isolation and the unique conditions of the Galapagos Islands given rise to the unusual features of Galapagos animals?
    • Would they survive if they were introduced into similar ecosystems elsewhere in the world?
    • What kind of adaptations would allow existing Galapagos animals to survive in other habitats around the world? (Remember, organisms can’t adapt because they want to or need to.)
    Final Questions